Portable collapsible scaffolding



Nov. 5, 1957 J. H. KING PORTABLE COLLAPSIBLE SCAFFOLDING Filed Jan. 12,1954 m -11.153 "INVENTOR ATTORNEYS United States Patent 2,812,220PORTABLE COLLAPSIBLE SCAFFOLDING James H. King, Greensboro, N. C.

2 Application January 12, 1954, Serial No. 403,477

1 Claim. (Cl. 304-11) This invention relates to scaffolds and moreparticularly to scaffolds including brackets of the collapsible type,the brackets being so constructed that when not in use, the brackets maybe folded into small and compact articles to facilitate storing andtransporting of the scaffolds to various points of use.

An object of the invention is to provide a bracket of this characterincluding a telescoping prop pivotally connected to the scaffoldsupporting bracket or frame, thereby adapting the scaffold for use atvarious heights and under various conditions.

Another important object of the invention is to provide an adjustablebrace bar having means for assembling and adjustably connecting one endof the brace rod to the scaffold bracket in such a manner that one endof the brace rod extends above the bracket surface, providing a stopagainst which a scaffold platform or scaffold platform board contact,holding the scaffold platform or scaffold boards against lateralmovement with respect to the bracket.

With the foregoing and other objects in view which will appear as thedescription proceeds, the invention consists of certain novel details ofconstruction and combinations of parts hereinafter more fully describedand pointed out in the claim, it being understood that changes may bemade in the construction and arrangement of parts without departing fromthe spirit of the invention as claimed.

Referring to the drawing:

Figure 1 is a side elevational view of a scaffold bracket constructed inaccordance with the invention.

Fig. 2 is a front elevational view thereof.

Fig. 3 is a plan view of the scaffold bracket.

Fig. 4 is a fragmental elevational view of the bracket with the prop andbrace rod connected therewith.

Referring to the drawing in detail, the scaffold bracket comprises aprop 5, which prop includes an upper tubular section 6 and a lowertubular section 7, the lower tubular section 7 being telescopicallyfitted within the upper tubular section 6, as better shown by Fig. l ofthe drawing. Openings are formed in the sections 6 and 7, the openingsof the sections 6 and 7 being arranged so that they will align toreceive a-securing pin 8, whereby the section 6 and 7 will be held invarious positions of adjustment with respect to each other, to meetrequirements of use. A handle 8' is provided on the lower end of theupper tubular section 6 for effecting adjustment of said prop.

At the lower end of the lower tubular section 7 is a foot 9, to whichthe lower tubular section 7 is pivotally connected, as at 10, thepivotal connection between the sections 7 and 9, being such that theprop may be tilted to the desired inclination, with respect to thesurface on which the prop is positioned.

The bracket also includes a substantially triangular frame indicatedgenerally by the reference character 11, the frame comprising a wide bar12 and wide side bars 13 connected at the ends of the bar 12, the bars13 converging towards what might be termed the outer end Patented Nov.5, 1957 of the frame 11, where they extend in parallel relation witheach other and engage opposite sides of the spaced bars 14. The spacedbars 14 have one of their respective ends welded to the side bar 13 at15, the other ends of the bars 14 extending between the straight ends ofthe side bars 13, as better shown by Fig. 3. The reference character 16indicates a brace which comprises an upper tubular section 17 and alower tubular section 18 slidable within one end of the upper tubularsection 17. The brace 16 is formed with an opening spaced from the upperend of the tubular section 17, which opening aligns with openings in thestraight parallel end portions of the wide side bars 13 and parallelbars 14 for the reception of the securing pin 19 which holds the frame11 and brace 16 connected. Because the opening through the upper end ofthe upper tubular section 17 is spaced a substantial distance from theupper end of the prop, an appreciable length of the upper tubularsection 17 extends above the frame and provides a stop against which ascaffold platform or scaffold brace forming a platform, may engage toprevent lateral movement of the scaffold floor or floor boards whichrest on the frame. Section 17 rests on a pin 24 which is positioned inone of the openings of section 18 of the brace 16.

The upper end of the upper tubular section 6 is pivotally connectedbetween the parallel bars 14 at a point adjacent the center of the widebar 12, the connection between the upper section 6 and frame, being madeby a pivot pin 20, which pivot is also arranged in spaced relation withthe upper end of the section 6 so that a substantial length of the uppertubular section 6 protrudes above the frame 11 to provide a stop for thescaffold platform against movement in one direction.

Extending laterally from the upper tubular section 6 and arranged in aline along the edge of the upper tubular section 6, are stirrups 21which embody substantially U-shaped members, the side walls of which areprovided with openings for the reception of the pin 22, which pin alsopasses through an opening formed in the car 23 secured at the lower endof the lower tubular section 18 pivotally connecting the brace 16 to theprop 5.

Due to the arrangement of the stirrup it will be obvious that the bracemay be positioned at various angles to level the frame of the scaffoldbracket.

From the foregoing it will be seen that due to the construction shownand described, I have provided a collapsible and foldable scaffoldbracket made up of telescoping sections pivotally connected to ascaffold frame in such a way that the prop and brace may be readilyremoved and collapsed into a small and compact article for transportingor storing purposes.

While I have shown and described a single bracket, it will of course, beunderstood that these brackets may be arranged in spaced relation witheach other along a Wall or building with which the scafiold is to beused in such a way that a scaffold platform or scaffold platform bracemay be placed thereon without the necessity of bolting or otherwisesecuring the platform to the bracket, thereby providing a strong, rigidand adjustable scaffold.

Having thus described the invention, what is claimed is:

In a scaffold bracket, a substantially triangular horizontal framehaving a base adapted to engage a wall surface, a pair of spacedparallel bars secured within the frame extending horizontally throughthe center thereof, a prop embodying inner and outer telescopingmembers, means for pivotally connecting the outer of said membersbetween said parallel bars in contact therewith at the end of said barsadjacent the base of said triangular frame, a plurality of spaced openstirrups secured along the surface of said prop, a brace member havingone of its ends pivotally connected between said bars at a pointadjacent the apex of said triangular frame, an ear extending from theother endpf the brace member adapted to be fitted within a selectedstirrup, a pin extending through said ear and stirrup in which the earis mounted, pivotally connecting said bracemember to said prop, and afootpivotally connected to said inner telescoping member at its lowerend.

References Cited in the file of this patent UNITED STATES PATENTS 4Murray et al. Dec. 22, 1903 Ellinger Sept. .19, 1905 Roth May 7, 1907Thrall Oct. 13, 1914 Thompson Dec. 12, 1922 Wertz Apr. 24, 1923 ThorneApr. 16, 1946 Yench Dec. 11, 1951 Michalowski Apr. 21, 1953 FOREIGNPATENTS Germany May 15, 1927 Ita y May 3, 1933 Germany Mar. 1, 1935

